Joseph e



(No Model.)

J. E. MAEGY 8v H. A. JONES.

BOILEB. FEEDER.

Patented Aug. 5, 1890.

INVENTORS.

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VUNITED STATES PATENT OFFICE.

JOSEPH E. MAROY AND HENRY A. JONES, OF NEV YORK, N. Y.

BOILER-FEEDER.

SPECIFICATION forming part of Letters Patent No. 433,576, dated August5, 1890. Application filed April 28, 1890i Serial No. 349,823. (Nomodel.)

To a/ZZ whom t nto/y concern.'

Be it known that we, JOSEPH E. MARCY and HENRY A. JONES, citizens of theUnited States, and residents oi New York, in the county of New York andState of New York, have in` vented certain new and useful Improvementsin Boiler-Feeders, of which the following is a specification.

The invention relates to improvements in boiler-feeders, andparticularly in feeders for low-pressure boilers; and it consists in theconstruction, hereinafter described and claimed, involving` a valvewhich is either opened or closed by the contraction or expansion of ametal rod or plate connected, either directly or indirectly, therewith,said valve and rod or plate being in the path of the water from thesource of supply to the boiler, and said plate or rod being subjected tothe expansive action of the steam or to contraction by t-he water.

In the accompanying' drawings I have elnbodied the invention in twoforms of valves, one representing the valve as connected through themedium of a lever with a rod or tube which operates to open or close thevalve through its expansion or contraction. The second form of valveillustrates a plate of metal as the medium through which by itsexpansion or contraction the valve may be either opened or closed toregulate the supply of the feed-water.

Referring to the accompanying drawings, Figure l isa central verticallongitudinal section of a valve with its casing and connectionsembodyingthe elements of the invention, and Fig. 2 is a like view of amodiiied form of the same.

In the accompanying drawings, A designates a casing having an inlet Bfor steam at its upper side and an outlet C for water, said outlet beingin connection with the boiler.

`(Not shown.) The inlet to the casing A is from the pipe D, which passesfrom the source of Water-supply to the valve casing E, in which isarranged the valve-seat F and the valve I, the latter being adapted tohave a sliding movement toward or from said seat and being free at itsouter end and at its inner end pivotally connected with the lever J,located within t-he vertical arm of the casing A. The lever J isfulcrumed at its upper end on the pivot K, and below said pivot ispivotally secured to the tube L, which extends longitudinally along theupper portion of the casing A, and is held at its outer end. by beingscrewed into a threaded aperture in the casing, the extremity of theouter end of said tube L being closed by the cap M. I prefer the use ofthe tube L because of its quality to readily expand or contract underthe in- 6o uence of heat and cold; but it is obvious that a rod maybesubstituted in place of the tube, if desired, without departing from theinvention.

The casing A will be provided with a remean time being' admitted to thecasing A 75 through the pipe B. The effect of the steam entering thecasing A is to heat the tube L and cause its longitudinal expansion andthe corresponding movement of the leverJ on its fulcrum K, the saidmovement of said lever 8o pushing the valve I from its seat E andleaving the passage clear for the entrance 0f the water to the casing Afrom the pipe D. As long as the water is low in the boiler, the

steam from the pipe B will have its full effect on the tube L, andthereby retain the valve I open, permitting an uninterrupted flow of thewater from the pipe D. Vhen, however, a sufficient quantity of water hasentered the boiler, the water will not then be able to flow 9o from thecasing A, but will rise in said casing and envelop the tube L, theeffect being to chill and contract said tube and draw the lever J inwardto its former position, thereby closing the valve I against its seatFand cutting o the su pply of water. lWhen the water rises within thecasing A and envelops the tube L, itis obvious that the latter will benot only contracted under the influence ot' the Water, but will beprotected from the action roo of the steam until such time as additionalwater is required in the boiler, when the escaping water to the boilerfrom the casing A will leave the tube L exposed and subject it to theaction of the steam from the pipe B. At this time the tubeL will beagain expanded, and through the movement of the lever J the valve I willbe opened to permit the iniiow of water from the pipe D. The action ofthe valve I under the influence ot' the expansion and contraction of thetube L is carried on automatically, the condition of the water in theboiler regulating its operation. I preferably provide the tube L withapertures P, so as to render said tube more susceptible to the expansionand contraction under the influence of the steam and water,respectively.

In Fig. 2 the casing A varies somewhat in form from the casing Aof Fig.l, but is the same in all essential respects, being provided with theinlet-pipe Q for the water, the inlet-pipe R for the steam, and theoutlet S to the boiler. Between the inlet Q and casingAis provided thevalve-seat T and valve V, the latter having the vertical stem YV andprovided with the spring X for the purpose of assisting the vvalve toits normal' position against its said seat T. The plug` Y is providedfor the purpose of facilitating the introduction of the valve V.

Within the casin g A is secured in the upper part thereof, by screws co,the metal plate b, having the central aperture d, through which theupper end of the stem W' may freely move, and having also seated in thelongitudinal recess in its lower surface the plate e, which is held inthe beveled ends of the said recess and is rigidly secured by thescrew-threads to the upper portion of the stem WV. The screws or extendthrough both the plate Z) and the plate e. In the modified form of theinvention presented in Fig. 2 the water passes from the source of supplythrough t-he pipe Q and valve into the casing A, and thence iiowsthrough the pipe S to the boiler, the position of the valve, andconsequently the extent of the fiow of water, to the boiler beingVregulated by the expansion and contraction ofthe plate e underrtheinfluence of the steam from the pipe R and the water. Steam beingadmitted through the pipe R, the plate e will become heated andexpanded, and, being rigidly conned at its ends, will during theexpansion bow downward at its center, pushing the stem XV withitandrelieving the valve V from contact with its seat T, at which time thewater will flow freely from the pipe Q into the casing A, and thenceescape to the boiler through the pipe S. As soon as the proper quantityof water has been fed to the boiler, water will back up in the pipe Sand casing A and envelop and chill the plate e, causing its contractionto its normal position, and the consequent elevation of the stem XV andvalve V, thereby cutting olf the supply of water.

As soon as the water has lowered in the boiler through the pipe S andleave the plate e free to beagain expanded by the action of the steamfrom the pipe R, thereby again opening the valve V and permitting thefree liow of the water into the casing A from the pipe Q. During thecontraction of the plate ethe spring X facilitates the return of thevalveV to its seat, and also the return of the middle portion of saidplate e to its normal position adjacent to the lower face of therecessed plate b.

In Fig. 2 of the drawings the normal position of the plate e is shownbyfull lines and its position when expanded by dotted lines.

It will be observed that in the two forms of valves shown the expansionand contraction of the metal automatically controls the flow of waterfrom the source of supply to the boiler, in each instance the steamserving at the proper time to expand the metal and thewatertocontractthesame. Intheformof valve shown in Fig. l the expansionand contraction of the tube longitudinally are depended on to effect theopening and closing of the valve, while in Fig. 2 the expansion of thelplate e, confined at its ends, causes said plate to bow downward at itsmiddle portion, and

this action operates to open the valve.

Vhat we claim as our invention, and desire to secure by Letters Patent,is-

l. The casing intermediate the boiler and source of water-supply landcontaining the steam-inlet, combined with the valve and a metal strip orother substance in connection therewith, said strip being within saidcasing and exposed to the expanding and contract- 'ing action of thesteam and water, for the purpose of regulating the opening and closingof said valve, which is located at the water-supply inlet, substantiallyas and for the purposes set forth.

2. The casing A, having the inlets for water and steam, the outlet forwater to the boiler, and the metal strip L, the latter being within saidcasing and exposed to the action of the steam and water, so as to expandand contract, combined with the valve located at said inlet for water,and the lever connecting said valve and strip, whereby the expansion andcontraction of the latter operate the former, substantially as setforth.

Signed at New York, in the county of New York and State of New York,this 25th day of April, A. D. 1890.

JOSEPH E. MARCY. HENRY A. JONES. Witnesses:

CHAs. C. GILL, ED. D. MILLER.

ICO

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